Coarse-graining and fluctuations: Two birds with one stone
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coarse-graininglarge-deviationapproachbirdsconceptfluctuationsformfunctional
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We show how the mathematical structure of large-deviation principles matches well with the concept of coarse-graining. For those systems with a large-deviation principle, this may lead to a general approach to coarse-graining through the variational form of the large-deviation functional.
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